Rotary steam-engine



(N0 Modem Q A & W. MIESSNER.

ROTARY STEAM ENGINE.

No. 453,935. Patented June 9,1891.

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CHARLES MIESSNER, AUGUST MIESSNER, AND VILLIAM MIESSNER, OF HUNTINGBURG, INDIANA.

ROTARY STEAM-ENGINE.

SPECIFICATION forming part of Letters Patent No. 453,935, dated J' une 9, 1891.

Application iiled April 1l, 1891.l Serial No. 388,521. (No model.)

To all whom it may concern:

Be it known that we, CHARLES MrEssNER AUGUST MIEssNER and WILLIAM MIEssNER, of Huntingburg, in the county of Dubois and State of Indiana, have invented certain new and useful Improvements in Rotary Stean1- Engines; and we do hereby declare the following to be a full, clear, and eXact description of the invention, such as will enable others skilled in the art to which it pertains to make and use it, reference being had to the accom'- panying drawings, which form part of this specification.

Our invention relates to au improved rotary steam-engine; and it consists in the particular constructions and arrangements of parts which will be fully described hereinafter.

The object of our invention is to produce a simple, cheap, effective, and durable rotary engine, which is so constructed that it can be reversed and made to run in either direction and to receive vsteam on both wings at the same time expansively. On the en d of the driving-shaft is attached a cut-off valve, by means of which any desired quantity of steam can be admitted into the cylinder, according to the size ot the openings in the valve.

Figure l is a vertical section of a rotary engine which embodies our invention complete. Fig.2is a vertical section through the cylinder on the dotted line X X of Fig. l. Fig. 3 is a detached view of the reversingvalve and the cut-off valve. Fig. 4 is an end view looking in the direction indicated by the arrow of Fig. 1.

A represents a cylinder supported upon a suitable base B, and which cylinder has at each side thereof the semicircular recesses C. Concentrically journaled within the cylinder A is a revolving wheel D, which has secured to its periphery the two wings E, which are provided with suitable packing to make them steam-tight. Suitably journaled within the semicircular recesses C are the two abutments F, each of which is provided with the recesses or cut-away portions G, for the purpose h ereinafter described.

Made through the outer face of the cylinder A are the four openings Il I'I and I I, which act as inlet and exhaust ports in the manner hereinafter described.

Secured to the one end of the shaft .I ofthe rotary wheel D is a cog-wheel K, which engages with the cog-wheels L, placed upon the adjacent ends of the journals or shafts of the abutments F. As the wheelD is made to revolve by steam-pressure within the cylinder, it, through the medium of the cog-wheels K L, revolves the abutments, and these abutments are placed in such a relative position to the wings upon the wheel D as to bring the openings G of the abutments opposite thewings E. Loosely placed upon one end of the driving-shaft J is a reverse valve M, which is provided with the openings N in its outer face, and near its centers the channels O, and the openings I upon its inner face and near its periphery. Secured to the extremity of the driving-shaft J is the cut-oft valve Q, which is provided with inlet-openings R. Surrounding the reverse and cut-ott valves is ashell S, which forms the inlet-chamber T, secured with packing, and the outlet or exhaust chamber U. These chambers are separated from each other by means of a spring or other suitable packing V, which is secured to the outer face of the reverse valve M, as shown. Connected with the inlet-chamber T is the steam-inlet pipe W", which is connected at its opposite end to the boiler, which is to be provided with a throttle-valve and governor to regulate the quantity of steam allowed to pass into the inlet-chamber T.

The reverse valve M is provided with four cut-away port-ions X, as shown, so that when the two openings P register with one of the openings I and one of the openings H two of these cut-away portions will register with the other two openings H I. A toothed wheel Y is connected with the reverse valve M in any suitable manner, provided with a lever by which the valve is given a partial revolution, so as to cause the openingsP to register with either two of the openings H I, as may be desired, and thereby admit steam to either side of the two wings E, which will cause the wheel D to revolve in any direction resolved by the engineer at a moments notice.

A great difiiculty existing in most rotary engines is that the steam is admitted continuously to the cylinder, and they cannot therefore use the expansion of the steam, as in the ICO ordinary reciprocating piston-engines where a cutoff valve is used, as shown by us.

Steam can be admitted from the boiler, only a portion of the revolution of the wheel al- 5 lowing the expansion of the steam to revolve it the remaining portion of its revolution. The amount of steam admitted to the cylinder is regulated by the size of the opening R in the cut-oli? valve Q. The opposite end of 1o the driving-shaft .l is supported upon a pedestal, and secured to this shaft J between the cylinder and the pedestal is a driving-pulley, through the medium of which the power of the engine is conveyed to any desired point.

15 Having thus described our invention, we-

claim- 1. In a rotary steam-engine, a cylinder, a rotary Wheel having Win gs, the revolving abutments having openings for the wings, inlet zo and exhaust ports in the side of the cylinder, a reverse valve having openings which register with the exhaust-ports and channels which have their inner ends register With the inletports, and a rotary out-oli' valve secured to 2 5 the rotary-Wheel shaft and having openings which register with the outer ends of the channels, the parts combined substantially as shown.

2. In a rotary steam-engine, a cylinder, a rotary wheel in the cylinder, having wings, 3o revolving abutments having openings for the wings, a casing at one side of the cylinder and separated therefrom, the casing having au inlet-chamber near its center and an outlet or exhaust chamber outside of the 35 inlet-chamber, a reverse valve having openings for the exhaust-ports and channels which have one end open into the :inlet-chamber and their opposite ends registering with inlet-ports, the cylinder having exhaust and 4a inlet ports which register, respectively, with the reverse-valvelexhaust openings and the inner ends of the said channels, and a cut-oit valve secured to the rotary-wheel shaft within the said inlet-chamber, and having openings 45 which register with the outer and central ends of the said channels, the parts combined to operate substantially as shown.

In testimony whereof we aiix our signatures in presence ot two witnesses.

CHARLES MIESSNER. AUGUST MIESSNER. XVILLIAM MIESSNER. Witnesses:

JONAS KiLIAN, .TAooB G. GATE. 

